[Cheezeninja]

If you truly want to spite them you'll both go down fighting and give all your assets away as you die. At a certain point in a losing war assets will be rendered obsolete or pretty much useless, like earth gems when you can't get any more earth mages. Alchemetizing them away into gold or something else dilutes their potency and depending on the nature of the war being fought might do very little to harm your opponent, whereas they might possibly help someone else immensely.

I view it as perfectly thematic to try and do maximum damage to the person killing you, through whatever legal game mechanics are available. Why not reward the neighbor that kept his word in the process?